Make code compatible with Gradio 6.0 structured content format

app.py

@@ -112,12 +112,30 @@ def chat_fn(message, history, system_prompt, max_new_tokens, temperature, top_p)
         system_prompt = "You are Be.FM, a helpful and knowledgeable AI assistant. Provide clear, accurate, and concise responses."
     messages.append({"role": "system", "content": system_prompt})
 
-    # History is already in dict format: [{"role": "user", "content": "..."}, ...]
+    # Handle Gradio 6.0 history format
+    # History format: [{"role": "user", "content": [{"type": "text", "text": "..."}]}, ...]
     for msg in (history or []):
-        messages.append(msg)
+        role = msg.get("role", "user")
+        content = msg.get("content", "")
+
+        # Extract text from structured content
+        if isinstance(content, list):
+            # Gradio 6.0 format: content is a list of dicts
+            text_parts = [c.get("text", "") for c in content if c.get("type") == "text"]
+            content = " ".join(text_parts)
+
+        if content:
+            messages.append({"role": role, "content": content})
 
     if message:
-        messages.append({"role": "user", "content": message})
+        # Handle message (could be string or dict in Gradio 6.0)
+        if isinstance(message, dict):
+            text = message.get("text", "")
+        else:
+            text = message
+
+        if text:
+            messages.append({"role": "user", "content": text})
 
     reply = generate_response(
         messages,